shape MDSYS.SDO_GEOMETRY); Step2. 在user_sdo_geom_metadata表中插入新记录,用于描述空间字段 INSERT INTO user_sdo_geom_metadata VALUES ( 'mylake', //---表名 'shape', //---字段名 MDSYS.SDO_DIM_ARRAY( MDSYS.SDO_DIM_ELEMENT('X', 0,
indextype is mdsys.spatial_index 1)创建索引之前总是要为空间层插入元数据(更新元数据视图) 2)如果之前创建的索引失败了,必须先删除才能创建 Drop index wyp_point_test_idx ; 在索引创建过程中,Oracle检查索引列的sdo_srid和user_sdo_geom_metadata中的srid是否匹配,如果不匹配,Oracle会产生ora-13365错误。 空...
R树索引存储在空间索引表 SDO_INDEX_TABLE 中,而该表有在试图SDO_INDEX_METADATA 中。R树索引通过一个顺序数字发生器来确保当前用户对索引的实时更新。 空间索引的元数据存储在视图 USER_SDO_INDEX_METADATA中,对应的表SDO_INDEX_METADATA_TABLE。存放所有索引的名称 (SDO_INDEX_NAME),存放索引的表 (SDO_INDEX_T...
and this value must be inserted into the SRID column of the USER_SDO_GEOM_METADATA view. All geometries in a geometry column must have the same SDO_SRID value. (3)、SDO_POINT:Oracle Spatial也可定义单个的点,SDO_POINT的定义: CREATE TYPE sdo_point_type AS OBJECT (X NUMBER,Y NUMBER,Z NU...
Oracle Spatial可对空间数据进行R-tree索引,每个空间图层(Spatial Layer)的空间索引元信息都可以在USER_SDO_INDEX_METADATA视图中找到。 具体的索引数据保存在MDRT字段开头的表中, 每个空间图层都会对应一个索引表(表的格式是MDRT_[...]$),空间索引表中的主要数据是MBR ...
Clones the metadata. boolean containsUserData() Checks if the network has user data defined in user_sdo_network_user_data void deleteLinkData(java.lang.String dataName) Deletes a link user data entry void deleteNodeData(java.lang.String dataName) Deletes a node user data entry void deletePath...
“Strong and intuitive data visualization options and solid metadata components.” —BI Developer in the Healthcare Industry “Oracle Analytics Cloud provides best of both worlds in governed and ungoverned data.” —Director, Enterprise Data Services in the Government Industry ...
FROM user_sdo_geom_metadata WHERE table_name = 'I_EXCH_S' --建空间索引 CREATE INDEX sr_sidx ON sales_regions(geom) INDEXTYPE IS mdsys.spatial_index; 4、sdo_Geom.SDO_DISTANCE SDO_DISTANCE函数的语法如下: SDO_DISTANCE ( geometry1 IN SDO_GEOMETRY, ...
DBMS_METADATA package y Database event triggers y DBMS_REPAIR package y Drop column y Index-organized table y Instead-of triggers y LOB support y Locally-managed tablespaces y LogMiner y Reverse key Index y Temporary table y Multiple block size support y Plan stability SE Y Y Y Y Y Y ...
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